To report brushing scams to Amazon, log into your Amazon account and then go to the "Report a scam" or "Report Suspicious Activity" section, then look for the link for "Report an unwanted package" or Report a scam".
Then click on the "Report Unsolicited Package or Brushing Scams".
Then fill out the self service form to report the unwanted package.
Provide details like the number of unwanted packages you have received, a tracking number from at least once of the packages from the brushing scam, a photo of the shipping label, "although the photo of the shipping label is optional" and any other additional information which can be useful.
If you can't find the form online to report the brushing scam to Amazon you can also contact Amazon Customer Service and report it.
If you do get a package through a brushing scam from Amazon you do not have to return the package and you can keep the package.
Amazon will investigate the report and take any needed action against the seller that sent the package for the brushing scam.
Amazon may also suspend or remove the seller's privileges and even withhold payments.
Amazon's customer service phone number is 1-888-280-4331.